JPH0691693A - Thin plate housing having seal structure part and production thereof - Google Patents

Thin plate housing having seal structure part and production thereof

Info

Publication number
JPH0691693A
JPH0691693A JP24433892A JP24433892A JPH0691693A JP H0691693 A JPH0691693 A JP H0691693A JP 24433892 A JP24433892 A JP 24433892A JP 24433892 A JP24433892 A JP 24433892A JP H0691693 A JPH0691693 A JP H0691693A
Authority
JP
Japan
Prior art keywords
seal
housing
resin
casing
thin plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP24433892A
Other languages
Japanese (ja)
Other versions
JP3406618B2 (en
Inventor
Masao Goto
Atsushi Ikegame
Kenichi Waratani
昌生 後藤
厚 池亀
研一 藁谷
Original Assignee
Hitachi Ltd
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, 株式会社日立製作所 filed Critical Hitachi Ltd
Priority to JP24433892A priority Critical patent/JP3406618B2/en
Publication of JPH0691693A publication Critical patent/JPH0691693A/en
Application granted granted Critical
Publication of JP3406618B2 publication Critical patent/JP3406618B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To inexpensively produce a thin-walled housing fitted with a seal structure part enhanced in appearance without restricting the shape of the housing. CONSTITUTION:A large number of runner gates 3 are radially provided from a runner gate central part 4 by first injection to form a seal structure part 2 and, subsequently, the housing 1 having the seal structure part 2, the runner gates 3 and the runner gate central part 4 partially embedded therein is formed by second injection. By this method, the seal structure part can be made hard to separate and the number of manufacturing processes of the thin-walled housing fitted with the seal structure part characterized by that the thickness of the part forming the seal structure part of the housing is 0.8mm or more and the width of the seal structure part is 0.5mm or more can be reduced. Further, the thin-walled housing fitted with the seal structure part improved in appearance and receiving no restriction in the shape of the housing can be produced.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、移動無線端末のよう
に、筐体と筐体又は筐体と蓋との合わせ面にシール構造
部を設け、密閉して筐体内部への水滴などの浸入を防止
し、筐体内に組込まれた電子部品を保護することを必要
とするシール構造部付き薄板筐体及びその製造法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, like a mobile radio terminal, is provided with a seal structure portion on a mating surface between casings or casings and a lid, and seals the casing to prevent water droplets or the like inside the casings. TECHNICAL FIELD The present invention relates to a thin plate housing with a seal structure that requires intrusion prevention and protects electronic components incorporated in the housing, and a manufacturing method thereof.
【0002】[0002]
【従来の技術】市場で一般に見うけられるシール構造部
付き筐体には2種類あり、その一つが筐体と弾性体のシ
ールをそれぞれ別々に形成し、筐体の組合わせ面に弾性
体のシールを組込み防水機能を持たせたものであり、こ
のシールを組込む部分の筐体の板厚は最低で2mmであ
り、シールの幅も1mmである。また、他の一つは一次
射出で筐体を形成し、その後引き続いて筐体の組合わせ
面に二次射出でシール構造部を形成してシール構造部付
き筐体とするものである。なお、この種の技術に関連す
るものとしては、例えば特公昭63−45292号公報
が挙げられる。
2. Description of the Related Art There are two types of casings with a seal structure generally found in the market, one of which is to form a seal for the casing and the seal for the elastic body separately, and to dispose the elastic body on the combined surface of the casing. The seal has a built-in waterproof function, and the thickness of the housing in which the seal is incorporated is at least 2 mm and the width of the seal is 1 mm. The other is to form a casing by primary injection, and subsequently form a seal structure portion on the combined surface of the casing by secondary injection to form a casing with a seal structure portion. Note that, as a technique related to this type of technique, for example, Japanese Patent Publication No. 63-45292 can be cited.
【0003】[0003]
【発明が解決しようとする課題】上記従来技術のうち、
前者の筐体と弾性体のシールとを別々に製造し、後で筐
体に弾性体のシールを組込むものの場合は、加工工数及
び組立て工数が多くなるという問題がある。特に、薄肉
筐体(例えば厚さが0.8mm)の板厚面に極小シール
(例えば幅0.5mm)を組込む場合は作業が困難であ
り、多くの工数がかかる。
Of the above-mentioned conventional techniques,
In the case of separately manufacturing the former casing and the elastic seal and incorporating the elastic seal into the casing later, there is a problem that the number of processing steps and the number of assembling steps increase. In particular, when an extremely small seal (for example, 0.5 mm in width) is incorporated in the plate thickness surface of a thin-walled casing (for example, 0.8 mm in thickness), the work is difficult and a lot of man-hours are required.
【0004】また、後者の一次射出で筐体を形成後、二
次射出でシール構造部を形成してシール構造部付き筐体
とする場合の問題点を、図13〜図19により説明する。図
13〜図16はシール構造部付き筐体の斜視図を、図17〜図
19は金型を用いて筐体を成形する際の断面図を、それぞ
れ示している。これらの図において、21はエジェクタピ
ン跡、22は筐体、23はシール構造部、24はゲート、25は
ゲートカット跡、26は固定側金型、27は可動側金型、28
はエジェクタピンである。
Further, problems in the case of forming the casing by the primary injection and then forming the seal structure by the secondary injection to obtain the casing with the seal structure will be described with reference to FIGS. 13 to 19. Figure
13 to 16 are perspective views of the housing with the seal structure, and FIGS.
Reference numerals 19 are cross-sectional views when molding a housing using a mold. In these figures, 21 is an ejector pin mark, 22 is a housing, 23 is a seal structure part, 24 is a gate, 25 is a gate cut mark, 26 is a fixed side mold, 27 is a movable side mold, 28
Is the ejector pin.
【0005】図17(a)、図18に示すように一次射出で
筐体22を形成後、図17(b)、図19に示すように二次射
出でシール構造部23を形成すると、一次射出後、固定側
金型26を別の金型26´に交換する構造上の問題から、図
18に示すように筐体22の外側を下向きにし可動側金型27
に保持できる形状、例えば凸部形状やアンダーカット形
状を設けて形成する必要がある。するとエジェクタピン
28は筐体22の外側に位置する。また、二次射出では図19
に示すようにシール構造部23を形成するためのゲート24
を筐体22の外側に出さなくてはならず、ゲート24をカッ
トしても図16の部分拡大図に示すようにゲートカット跡
25が外側に残る。作製したシール構造部付き筐体は図13
〜図16に示すように、エジェクタピン跡21とゲートカッ
ト跡25が外側にあり、筐体22は可動側金型27に保持でき
る形状、すなわち筐体22の外側が図13に示す通り凹形状
になってしまうという問題点がある。
When the housing 22 is formed by primary injection as shown in FIGS. 17A and 18, and the seal structure 23 is formed by secondary injection as shown in FIGS. After the injection, the fixed side mold 26 is replaced with another mold 26 '.
With the outside of the casing 22 facing downward as shown in 18, the movable mold 27
It is necessary to provide a shape that can be retained in the shape, for example, a convex shape or an undercut shape. Then the ejector pin
28 is located outside the housing 22. For the secondary injection, Fig. 19
A gate 24 for forming a seal structure 23 as shown in FIG.
Must be exposed to the outside of the housing 22, and even if the gate 24 is cut, the gate cut marks will be left as shown in the partially enlarged view of FIG.
25 remains outside. Figure 13 shows the case with the seal structure.
~ As shown in Fig. 16, the ejector pin trace 21 and the gate cut trace 25 are on the outside, and the casing 22 has a shape that can be held by the movable mold 27, that is, the outside of the casing 22 has a concave shape as shown in Fig. 13. There is a problem that it becomes.
【0006】したがって、本発明の目的は上記従来の問
題点を解消することにあり、その第1の目的は改良され
たシール構造部付き薄板筐体を提供することにあり、第
2の目的はその製造方法を提供することにある。さらに
具体的には一次射出でシール構造部を形成後、二次射出
で筐体を形成することであり、また、筐体のシール構造
を形成する部分の板厚は、0.8mm以上であり、シール
構造部の幅は0.5mm以上であるシール構造部付き薄板
筐体を、安価で外観を向上させ、筐体の形状を制約され
ずに製造することにある。
Therefore, an object of the present invention is to eliminate the above-mentioned conventional problems, a first object thereof is to provide an improved thin plate housing with a seal structure portion, and a second object thereof. It is to provide the manufacturing method. More specifically, after forming the seal structure portion by the primary injection, the housing is formed by the secondary injection, and the plate thickness of the portion forming the seal structure of the housing is 0.8 mm or more, The width of the seal structure portion is 0.5 mm or more, and it is to manufacture a thin plate housing with a seal structure portion at a low cost with an improved appearance and without restricting the shape of the housing.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、シール構造部形成のためのランナーゲートは、筐体
の中央部内側より放射状に複数個設けた。また、一次射
出でシール構造部を形成後、二次射出で筐体を形成し、
組立て工数の削減を行った。さらに、シール構造部形成
用の第一樹脂は、ゴム弾性をもつ合成ゴム類、もしくは
熱可塑性エラストマであり、筐体成形用の第二樹脂は、
高剛性エンジニアリングプラスチックとした。
In order to achieve the above object, a plurality of runner gates for forming the seal structure portion are provided radially from the inside of the central portion of the housing. Also, after forming the seal structure part by primary injection, form the housing by secondary injection,
The number of assembly steps has been reduced. Further, the first resin for forming the seal structure portion is a synthetic rubber having rubber elasticity or a thermoplastic elastomer, and the second resin for molding the casing is
Highly rigid engineering plastic.
【0008】[0008]
【作用】本発明では、まず、一次射出で例えば幅0.5m
mのシール構造部を形成する。この際、樹脂は中央部よ
り放射状のランナーゲートを流れるが、ランナーゲート
を複数個設けることにより、シール構造部のすみずみま
で充填できる。次いで二次射出で筐体を形成し、シール
構造部付き薄板筐体を製造する。また、一次射出でシー
ル構造部を形成し、二次射出で筐体を作製をする製造方
法をとることにより、金型の構造からランナーゲートを
内側から入れることが可能となり、筐体の外側にエジェ
クタピンやゲートカットの跡が残らない。また、従来の
ように一次射出で筐体を可動側に保持する形状にする必
要もなくなり、シール構造部付き薄板筐体が、連続的に
製造することができる。
In the present invention, first, for example, the width is 0.5 m in the primary injection.
m to form a seal structure portion. At this time, the resin flows through the radial runner gate from the central portion, but by providing a plurality of runner gates, the resin can be filled up to every corner of the seal structure portion. Next, a housing is formed by secondary injection to manufacture a thin board housing with a seal structure. Also, by adopting a manufacturing method in which the seal structure part is formed by primary injection and the housing is manufactured by secondary injection, it becomes possible to insert the runner gate from the inside due to the structure of the mold, and to the outside of the housing. No traces of ejector pins or gate cuts. Further, unlike the conventional case, it is not necessary to make the casing hold the movable side by the primary injection, and the thin plate casing with the seal structure can be continuously manufactured.
【0009】[0009]
【実施例】以下、本発明の一実施例を図面にしたがって
説明する。 〈実施例1〉この例は、本発明のシール構造部付き薄板
筐体を移動無線端末に適用した場合について説明するも
のである。図1はシール構造部付き薄板筐体を内側より
見た斜視図、図2は図1のI−I断面図、図3は図2の
イ部の拡大図、図4は図3のII−II断面図である。そし
て図5は移動無線端末の外観を示した斜視図である。図
1〜図5において、1は筐体、2は弾性体のシール構造
部、3はランナーゲート、4はランナーゲート中央部、
5はカバーである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <Example 1> In this example, a case where the thin plate housing with a seal structure of the present invention is applied to a mobile radio terminal will be described. FIG. 1 is a perspective view of the thin plate housing with a seal structure seen from the inside, FIG. 2 is a cross-sectional view taken along the line I--I of FIG. 1, FIG. 3 is an enlarged view of the portion a in FIG. 2, and FIG. It is a II sectional view. FIG. 5 is a perspective view showing the appearance of the mobile wireless terminal. 1 to 5, 1 is a housing, 2 is an elastic seal structure portion, 3 is a runner gate, 4 is a runner gate central portion,
5 is a cover.
【0010】図6は本発明のシール構造部付き薄板筐体
を製造する一対の射出成形用金型の断面図である。図7
は第一樹脂を射出してシール構造部2を成形した状態を
示す断面図である。図8は成形したシール構造部2を可
動側の金型に保持し、第二樹脂である筐体を形成してシ
ール構造部付き薄板筐体を製造した状態を示す断面図で
ある。図6〜図8において、6a、6bはスプールラン
ナー、7a、7bは射出装置、8a、8bは固定側金
型、8a′、8b′は固定側取付型、8a″、8b″は
固定側型板、9a、9bは可動側金型、10a、10bはエ
ジェクタプレート、11a、11bはエジェクタピン、12は
回転板である。
FIG. 6 is a cross-sectional view of a pair of injection molding dies for manufacturing the thin plate casing with the seal structure portion of the present invention. Figure 7
FIG. 3 is a cross-sectional view showing a state in which the seal structure 2 is molded by injecting a first resin. FIG. 8 is a cross-sectional view showing a state in which the molded seal structure 2 is held in a movable mold and a housing which is the second resin is formed to manufacture a thin plate housing with a seal structure. 6 to 8, 6a and 6b are spool runners, 7a and 7b are injection devices, 8a and 8b are stationary molds, 8a 'and 8b' are stationary mounting molds, and 8a "and 8b" are stationary molds. Plates, 9a and 9b are movable molds, 10a and 10b are ejector plates, 11a and 11b are ejector pins, and 12 is a rotary plate.
【0011】次に本発明のシール構造部付き薄肉筐体の
構造について図1〜図4により説明する。シール構造部
2、ランナーゲート3及びランナーゲート中央部4は筐
体1に一部埋設する。この様な構造にすることにより、
シール構造部2が筐体1より離脱しにくくしている。ま
た、筐体1の内側にランナーゲート3を放射状に複数個
設けることにより、シール構造部2のすみずみまで樹脂
を充填することができる。
Next, the structure of the thin casing with the seal structure portion of the present invention will be described with reference to FIGS. The seal structure part 2, the runner gate 3, and the center part 4 of the runner gate are partially embedded in the housing 1. With such a structure,
The seal structure portion 2 is made hard to separate from the housing 1. Further, by providing a plurality of runner gates 3 radially inside the housing 1, it is possible to fill the resin up to every corner of the seal structure 2.
【0012】シール構造部付き薄板筐体の製造方法につ
いて図6〜図8により説明する。先ず、図6(a)、図
7に示すように固定側金型8aと可動側金型9aを型閉
めし、第一樹脂を射出装置7aより射出する。第一樹脂
はスプールランナー6aを通りキャビティに充填し、シ
ール構造部2を形成する。次に型開き後、シール構造部
2を可動側金型9aに保持したまま回転板12を回転する
ことにより、図6(b)、図8に示すように一対の金型
のうち固定側金型8aを8bに交換して型閉めし、第二
樹脂を射出装置7bより射出する。第二樹脂はスプール
ランナー6bを通り、キャビティに充填し、筐体1が形
成され、シール構造部付き薄板筐体を製造する。その
後、型開きを行い、エジェクタプレート10aを作動する
ことにより、エジェクタピン11aも作動し、シール構造
部付き薄板筐体を金型から取出す。ここで、型開き時、
固定側取付板8a′、8b′と固定側型板8a″、8
b″の間を適量開くことにより、スプールランナー6
a、6bをランナーゲート中央部4から切りはなして取
り出す。以後、この動作を繰返すことにより、シール構
造部付き薄板筐体が連続的に製造できる。
A method of manufacturing a thin plate housing with a seal structure will be described with reference to FIGS. First, as shown in FIGS. 6A and 7, the fixed mold 8a and the movable mold 9a are closed, and the first resin is injected from the injection device 7a. The first resin passes through the spool runner 6a and fills the cavity to form the seal structure 2. Next, after the mold is opened, the rotary plate 12 is rotated while the seal structure 2 is held in the movable mold 9a, so that the fixed mold of the pair of molds is fixed as shown in FIGS. The mold 8a is replaced with 8b, the mold is closed, and the second resin is injected from the injection device 7b. The second resin passes through the spool runner 6b and is filled into the cavity to form the housing 1, and a thin housing with a seal structure is manufactured. After that, the mold is opened and the ejector plate 10a is operated, so that the ejector pin 11a is also operated and the thin plate housing with the seal structure is taken out of the mold. Here, when opening the mold,
Fixed side mounting plates 8a ', 8b' and fixed side template 8a ", 8
By opening a suitable amount between b ″, the spool runner 6
Cut out a and 6b from the center part 4 of the runner gate and take them out. Thereafter, by repeating this operation, the thin plate housing with the seal structure can be continuously manufactured.
【0013】なお、ここで使用するシール構造部形成用
の第一樹脂は、ゴム弾性をもつ合成ゴム類又は熱可塑性
エラストマであり、筐体成形用の第二樹脂は、高剛性エ
ンジニアリングプラスチックである。
The first resin for forming the seal structure used here is a synthetic rubber having rubber elasticity or a thermoplastic elastomer, and the second resin for molding the housing is a high-rigidity engineering plastic. .
【0014】〈実施例2〉図9〜図12は、本発明の他の
一実施例を示す。図9は、対カバーとの合わせ面の広い
シール構造部付き薄板筐体1の斜視図、図10は、図9の
ロ部の部分断面拡大図である。図9に示すような筐体の
周囲につば13を形成し、対カバーとの合わせ面を広くし
た形状の筐体にも適用できる。図11は、シール構造部付
き円筒状容器の斜視図、図12は、図11のハ部の部分断面
拡大図である。図11に示すような薄肉状の円筒形の容器
1にも本発明は適用できる。
<Second Embodiment> FIGS. 9 to 12 show another embodiment of the present invention. 9 is a perspective view of the thin plate housing 1 with a seal structure portion having a wide mating surface with the cover, and FIG. 10 is an enlarged partial cross-sectional view of the portion B in FIG. It can also be applied to a case having a shape in which a flange 13 is formed around the case as shown in FIG. 9 and a mating surface with the cover is wide. FIG. 11 is a perspective view of a cylindrical container with a seal structure portion, and FIG. 12 is a partial cross-sectional enlarged view of portion C of FIG. The present invention can be applied to a thin-walled cylindrical container 1 as shown in FIG.
【0015】[0015]
【発明の効果】本発明によれば、シール構造形成のため
のランナーゲートは、筐体の中央部内側より放射状に複
数個設けることにより、シール構造部付き薄板筐体が実
現できる。また、一次射出でシール構造部を形成後、二
次射出で筐体を形成することにより、安価でエジェクタ
ピンやゲートカットの跡を残さず、しかも筐体の形状で
制約を受けないシール構造部付き筐体を製造できる。シ
ール構造部形成用としてゴム弾性をもつ合成ゴム類又は
熱可塑性エラストマを用いたので、2つの筐体との合わ
せ面の押し付け荷重が小さくともその気密性は十分確保
でき、筐体内に組込まれた電子部品類を外部の水滴など
から保護できる。
According to the present invention, a plurality of runner gates for forming a seal structure are provided radially from the inside of the central portion of the case, so that a thin plate case with a seal structure can be realized. In addition, by forming the seal structure part by primary injection and then forming the housing by secondary injection, the seal structure part is inexpensive and does not leave marks for ejector pins or gate cuts, and is not restricted by the shape of the housing. Can be manufactured. Since synthetic rubbers or thermoplastic elastomers having rubber elasticity were used to form the seal structure, the airtightness could be sufficiently secured even if the pressing load on the mating surface with the two housings was small, and it was incorporated into the housing. Electronic parts can be protected from external water drops.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の一実施例となるシール構造部付き薄板
筐体の内側より見た斜視図。
FIG. 1 is a perspective view seen from the inside of a thin plate housing with a seal structure portion according to an embodiment of the present invention.
【図2】同じく図1のI−I断面図。FIG. 2 is a sectional view taken along line I-I of FIG.
【図3】同じく図2のイ部の拡大図。FIG. 3 is an enlarged view of a portion A in FIG.
【図4】同じく図3のII−II断面図。FIG. 4 is a sectional view taken along line II-II of FIG.
【図5】同じく移動無線端末の全体斜視図。FIG. 5 is an overall perspective view of the mobile wireless terminal.
【図6】同じくシール構造部付き薄板筐体を製造する金
型の断面図。
FIG. 6 is a sectional view of a mold for manufacturing a thin plate housing with a seal structure portion.
【図7】同じくは金型によりシール構造部を形成した状
態を示す断面図。
FIG. 7 is a cross-sectional view showing a state in which a seal structure portion is similarly formed by a mold.
【図8】同じく金型により筐体を形成してシール構造部
付き薄板筐体を製造した状態を示す断面図。
FIG. 8 is a cross-sectional view showing a state in which a casing is formed by a mold and a thin plate casing with a seal structure is manufactured.
【図9】同じく本発明の他の実施例となるシール構造部
付き薄板筐体の内側より見た斜視図。
FIG. 9 is a perspective view seen from the inside of a thin plate housing with a seal structure, which is also another embodiment of the present invention.
【図10】同じく図9のロ部の部分断面拡大図。FIG. 10 is a partially enlarged cross-sectional view of the portion B of FIG.
【図11】同じく本発明の他の実施例となるシール構造
部付き薄板筐体の内側より見た斜視図。
FIG. 11 is a perspective view seen from the inside of a thin plate housing with a seal structure portion which is another embodiment of the present invention.
【図12】同じく図11のロ部の部分断面拡大図。FIG. 12 is a partially enlarged cross-sectional view of the portion B of FIG.
【図13】従来技術である第一樹脂で筐体、第二樹脂で
シール構造部を形成したシール構造部付き筐体の外観斜
視図。
FIG. 13 is an external perspective view of a housing with a seal structure part in which a housing is made of a first resin and a seal structure part is made of a second resin, which is a conventional technique.
【図14】同じく内側より見た斜視図。FIG. 14 is a perspective view of the same seen from the inside.
【図15】同じく図14のIII−III断面図。FIG. 15 is a sectional view taken along line III-III of FIG.
【図16】同じく図15のニ部の部分拡大図。16 is a partially enlarged view of the portion D of FIG.
【図17】同じく金型の断面図。FIG. 17 is a sectional view of the mold.
【図18】同じく金型で筐体を形成した状態を示す断面
図。
FIG. 18 is a cross-sectional view showing a state in which a housing is similarly formed with a mold.
【図19】同じくシール構造部を形成してシール構造部
付き筐体を製造した状態を示す断面図。
FIG. 19 is a cross-sectional view showing a state in which a seal structure portion is also formed and a casing with a seal structure portion is manufactured.
【符号の説明】[Explanation of symbols]
1…筐体、 2…シ
ール構造部、3…ランナーゲート、
4…ランナーゲート中央部、5…カバー、
6a、6b…スプールランナー、7
a、7b…射出装置、 8a、8b…固定
側金型、9a、9b…可動側金型、 10a、
10b…エジェクタプレート、11a、11b…エジェクタピ
ン、 12…回転板。
1 ... Casing, 2 ... Seal structure part, 3 ... Runner gate,
4 ... central part of runner gate, 5 ... cover,
6a, 6b ... spool runner, 7
a, 7b ... Injection device, 8a, 8b ... Fixed side mold, 9a, 9b ... Movable side mold, 10a,
10b ... Ejector plate, 11a, 11b ... Ejector pin, 12 ... Rotating plate.

Claims (6)

    【特許請求の範囲】[Claims]
  1. 【請求項1】対カバーとの合わせ面の周囲に弾性体のシ
    ール構造部を備えた筐体であって、シール構造部形成の
    ためのランナーゲートを、筐体の内側の中央部より放射
    状に複数個設けると共に、その一部分を筐体に埋設して
    成るシール構造部付き薄板筐体。
    1. A housing provided with an elastic seal structure around a mating surface with a cover, wherein a runner gate for forming the seal is radially formed from a central portion inside the housing. A thin-plate casing with a seal structure part, which is formed by arranging a plurality of parts and burying a part thereof in the casing.
  2. 【請求項2】上記筐体のシール構造を形成する部分の板
    厚を0.8mmまで薄くすると共に、シール構造部の幅を
    0.5mmまで狭くして成る請求項1記載のシール構造部
    付き薄板筐体。
    2. The plate thickness of a portion forming the seal structure of the casing is reduced to 0.8 mm, and the width of the seal structure portion is reduced.
    The thin plate housing with a seal structure according to claim 1, which is narrowed to 0.5 mm.
  3. 【請求項3】シール構造部をゴム弾性をもつ合成ゴム類
    もしくは熱可塑性エラストマからなる樹脂で構成し、筐
    体を高剛性エンジニアリングプラスチックで構成して成
    る請求項1もしくは2記載のシール構造部付き薄板筐
    体。
    3. The seal structure according to claim 1, wherein the seal structure is made of a synthetic rubber having rubber elasticity or a resin made of a thermoplastic elastomer, and the casing is made of a high-rigidity engineering plastic. Thin case.
  4. 【請求項4】互いに置き換え可能な一対の金型を備えた
    成形機を用い、前記金型のいずれか一方のキャビティに
    第一樹脂の軟質樹脂を射出して、シール構造部を形成す
    る工程と、型開き後このシール構造部を可動側内に保持
    したままの状態で一対の金型のうち固定型を交換して型
    閉めし、第二樹脂の硬質樹脂を射出して筐体を形成する
    工程とを有して成るシール構造部付き薄板筐体の製造方
    法。
    4. A step of forming a seal structure portion by injecting a soft resin of a first resin into one of the cavities of the mold using a molding machine having a pair of molds which can be replaced with each other. After the mold is opened, the fixed structure of the pair of molds is replaced and the mold is closed while the seal structure is held in the movable side, and the hard resin of the second resin is injected to form the housing. A method of manufacturing a thin plate housing with a seal structure, the method including:
  5. 【請求項5】第一樹脂の軟質樹脂を射出して、シール構
    造部を形成する工程においては、ランナーゲート中央部
    から放射状に複数個のランナーゲートを設けて射出成形
    する工程として成る請求項4記載のシール構造部付き薄
    板筐体の製造方法。
    5. The step of injecting a soft resin as the first resin to form the seal structure portion is a step of providing a plurality of runner gates radially from the center of the runner gate and performing injection molding. A method for manufacturing a thin plate housing with a seal structure part as described.
  6. 【請求項6】シール構造部形成用の第一樹脂をゴム弾性
    をもつ合成ゴム類もしくは熱可塑性エラストマで、筐体
    形成用の第二樹脂を高剛性エンジニアリングプラスチッ
    クでそれぞれ射出成形する工程として成る請求項4もし
    くは5記載のシール構造部付き薄板筐体の製造方法。
    6. A step of injection-molding a first resin for forming a seal structure part with synthetic rubber or a thermoplastic elastomer having rubber elasticity and a second resin for forming a case with high-rigidity engineering plastic. Item 6. A method for manufacturing a thin plate housing with a seal structure according to item 4 or 5.
JP24433892A 1992-09-14 1992-09-14 Thin plate housing with seal structure Expired - Fee Related JP3406618B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24433892A JP3406618B2 (en) 1992-09-14 1992-09-14 Thin plate housing with seal structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24433892A JP3406618B2 (en) 1992-09-14 1992-09-14 Thin plate housing with seal structure

Publications (2)

Publication Number Publication Date
JPH0691693A true JPH0691693A (en) 1994-04-05
JP3406618B2 JP3406618B2 (en) 2003-05-12

Family

ID=17117226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24433892A Expired - Fee Related JP3406618B2 (en) 1992-09-14 1992-09-14 Thin plate housing with seal structure

Country Status (1)

Country Link
JP (1) JP3406618B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726742A1 (en) * 1997-06-24 1999-01-07 Hoppecke Zoellner Sohn Accu Method for producing an at least partially electrically conductive battery cover
JP4669570B1 (en) * 2010-06-02 2011-04-13 工立化成株式会社 Method for manufacturing casing provided with sealing member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726742A1 (en) * 1997-06-24 1999-01-07 Hoppecke Zoellner Sohn Accu Method for producing an at least partially electrically conductive battery cover
US6071642A (en) * 1997-06-24 2000-06-06 Accumulatorenwerke Hoppecke Method for manufacturing a battery cover which is at least partially electrically conductive
DE19726742B4 (en) * 1997-06-24 2007-06-06 Vb Autobatterie Gmbh & Co. Kgaa Method for producing a battery cover, accumulator cover and accumulator
JP4669570B1 (en) * 2010-06-02 2011-04-13 工立化成株式会社 Method for manufacturing casing provided with sealing member
JP2011251478A (en) * 2010-06-02 2011-12-15 Koritsu Kasei Kk Method for manufacturing housing having seal member

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